BE401750A - - Google Patents

Info

Publication number
BE401750A
BE401750A BE401750DA BE401750A BE 401750 A BE401750 A BE 401750A BE 401750D A BE401750D A BE 401750DA BE 401750 A BE401750 A BE 401750A
Authority
BE
Belgium
Prior art keywords
telephone
alarm device
help
secret
secret alarm
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE401750A publication Critical patent/BE401750A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Burglar Alarm Systems (AREA)
BE401750D BE401750A (cs)

Publications (1)

Publication Number Publication Date
BE401750A true BE401750A (cs)

Family

ID=67621

Family Applications (1)

Application Number Title Priority Date Filing Date
BE401750D BE401750A (cs)

Country Status (1)

Country Link
BE (1) BE401750A (cs)

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